Fire-resistant shingle and method of making same



E. LAYTON FIRE RESISTANT SHINGLE AND METHOD OF MAKING SAME Dec, 9,

Filed April 18 1923 1 [MENTOR v fps/9R MYTON Muf Patented Dec. 9, 1924.v

UNITED STATES PATENT OFFICE.

EDGAR LA'YTON; OF LARKSPUR, CALIFORNIA.

.FIRE-BESISTANT SHINGLE AND METHOD OF MAKING SAME.

Application filcd April 18, 1923. Serial No. 633,032.

To a]? whom it may concern: care will adhere' to the shingle and, whenBe it known that I, EDGAR TSAYTOX. a cit-idried, remains permanently onthe shingle 40 zen of the l nited States. residing at Lar withoutcracking or chipping.

spur. county of Marin, and State of Ca-li- The drying ofthe shingles andpretornia, have invented new and useful Imliminary treatment withmagnesium chloprovements in Fire-Resistant Shingles and ride insuresthat the mixture of magnesite Methods of Making Same. of which the andasbestos will adhere to the shingle. following is a specification. Theproduct is fire-resistant and durable...

This invention relates to fire-resistant The coating of magnesite andasbestos is shingles and a method of making same. sufiiciently elasticand flexible to permit The object of the invention is to treat a drivingof the nails therethrough without wooden shingle or the like so as tomake it chipping or cracking the material.

resistant to tire and to provide a fire're- Having thus described myinvention,

sistant material which shall be du "able and what I claim and desire tosecure by Letters flexible and capable of being nailed'with- Patent is:

out danger of cracking or chipping. 1 1. An article of manufacturecomprising further object is to simplify and improi'e a wooden shingleor the like. having a the method of producing such an article binderformed of magnesium chloride and with a view to reducing the cost andtime a coating consisting of a mixture of ma'gucv of manufacture. siteand asbestos suspended in magnesium In the accompanying drawing:chloride. V Fig. 1 shows a plan view of a wooden 2. A method of makingwooden shingles shingle or the like before the same has been or the likefire resistant which consists in treated. -immcrsing the shingle in avbath of magne- Fig. 2 shows a plan view. of the. same sium chloride andthereafter coating the after it has undergone treatment. inaccordshingle with a. mixture of inagnesile and ance with my invention.v asbestos suspended in a. solution of magin carrying out this inventionT employ nesium chloride.

a wooden shingle or the like. as indicated at 3. A method of makingwooden shingles- 10. The shingles are first thoroughly dried or the likefire resistantwhich consists in in a kiln after which they are immersedin drying the shingle in a dry kiln, thereafter a tank containing asolution of magnesium subjecting the dry shingle to a solution of 7chloride having a. strength of approximagnesium chloride having astrength of mately 22%. After being in the ba.h for approximately 22%and thereafter immers- 35 about fifteen minutes they are immersed in ingthe shingle in a mixture of magnesite a tank containing a mixture ofmagnesite and asbestos in equal proportions suspend- V and asbestos inequal proportions dissolved ed in a solution of magnesium chloride. inmagnesium chloride. 'This latter mixz EDGAR TON-

